"It's not really my fault" because you are expressing no capability for thought or recognition of facts. You're just troll and we're through with your BS.
Fact: no matter which company you work for, you cannot sell unvested shares and you can sell vested shares.
Fact: Enron employees were free to sell their vested shares just as any other employee in America was free to sell vested shares.
Fact: if Enron employees were unhappy with the vesting period in Enron shares they could have opted to put 6% of their pretax income in cash or mutual funds.
It's OK that you don't understand how 401k plans work - a lot of people have difficulty understanding them.
That doesn't really give you any call to curse at me or call me names, however.